FREAD(3S)                            BSD                             FREAD(3S)



NAME
     fread, fwrite - buffered binary input/output

SYNOPSIS
     #include <stdio.h>

     fread(ptr, sizeof(*ptr), nitems, stream)
     FILE *stream;

     fwrite(ptr, sizeof(*ptr), nitems, stream)
     FILE *stream;

DESCRIPTION
     fread reads, into a block beginning at ptr, nitems of data of the type of
     *ptr from the named input stream.  It returns the number of items
     actually read.

     If stream is stdin and the standard output is line buffered, then any
     partial output line will be flushed before any call to read(2) to satisfy
     the fread.

     fwrite appends at most nitems of data of the type of *ptr beginning at
     ptr to the named output stream.  It returns the number of items actually
     written.

SEE ALSO
     read(2), write(2), fopen(3S), getc(3S), putc(3S), gets(3S), puts(3S),
     printf(3S), scanf(3S)

DIAGNOSTICS
     fread and fwrite return 0 upon end-of-file or error.